Katherine Larson MD
About this NPIWhat this record shows.
NPI 1417393661 is registered to Katherine Larson MD, a Internal Medicine practising at 260 26th St in Prairie Du Sac, Wisconsin. Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties. Katherine Larson MD has been enumerated in the National Provider Identifier (NPI) registry since 2013.
Beyond the registryWhat this record adds.
It is enrolled in Medicare, linking to 2 PECOS enrollment records (each with a public Medicare Enrollment ID) sourced from CMS, which the NPPES registry does not list. Within the directory it is one of 2,265 Internal Medicine providers on file in Wisconsin.
Source: CMS NPPES and PECOS public files. snapshot, refreshed monthly.
Your brand here.
Medicare enrollment
This provider holds 2 Medicare enrollments on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20190624000802Internal MedicineWI
- I20190905002329Internal MedicineMN
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Katherine Larson MD accepts. To confirm in-network status with your specific health plan, contact Katherine Larson MD directly at (608) 643-3311.
Frequently asked
Yes. NPI 1417393661 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (608) 643-3311.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Katherine Larson MD is a Type-1 individual NPI.
As of the latest monthly CMS NPPES snapshot, 2,265 Internal Medicine providers are registered in Wisconsin, and Katherine Larson MD is one of them. The figure refreshes each month from the federal source.